What is Cement?
CEMENT Cement or cementitious material generally refers to a material with adhesive and cohesive properties which make it capable of bonding minerals fragments into a compact whole. The term "cement" in construction is restricted to the bonding materials used with stones, sand, bricks, building stones, etc . The principal constituents of this type of cement are compounds of lime, so that in building and civil engineering we are concerned with calcareous cements. Hydraulic cements have the property of setting and hardening under water by virtue of a chemical reaction with it. These are the cements of interest in the making of concrete. They consist mainly of silicates and aluminates of lime. Broad classification of hydraulic cements; Natural cements, Portland cements, High-alumina cements 'Pozzolanic cements' generally refers to cements obtained simply by grinding of naturals materials at normal temperatures Pozzolana: a siliceous or siliceous + aluminous ...